The Cinnamon cockatiel is a mutation which causes the feathers which are normally grey to appear brown. The plumage color can range from a tannish-grey to a chocolate brown.
The male Cinnamon cockatiel, like its normal grey counterpart, develops a bright yellow face and bright orange cheekpatches upon maturity. Immature and female Cinnamon cockatiels retain their dull orange cheekpatches, their faces do not turn yellow, and they have white or yellow barring on the underside of their tails.
Cinnamon is one of the most common colors apart from normal grey. It is exactly the same for the above descriptions, but instead of a grey color over the body, it is a pale �dusty’ silver/brownish color. It can be mistaken for a light grey, but has a browner overtone, and a paler, softer appearance. Some are a very obvious brown color too. The bright face and clear tail feathers of the male, as well as the immature and the females’ dull face and barred tails is the same as for the normal grey. Note though that a cinnamon’s immature and females �dull’ face is often a lot brighter than the same dull face of a normal grey.